Portable writing board



FIG. 1 is a top right front perspective view of a portable writing boardshowing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a left side elevational view thereof; the right sideelevational view being a mirror image; and,

FIG. 6 is a bottom plan view thereof.

The ornamental design for a portable writing board, as shown anddescribed.